# Universally Unique Identifier | ![img \|150](https://upload.wikimedia.org/wikipedia/commons/thumb/b/ba/UEFI_variables_on_Linux_screenshot.png/320px-UEFI_variables_on_Linux_screenshot.png) | A Universally Unique Identifier (UUID) is a 128-bit label used for information in computer systems. The term **Globally Unique Identifier** (GUID) is also used, mostly in Microsoft systems. | |-|-| | | wikipedia:: [Universally unique identifier](https://en.wikipedia.org/wiki/Universally_unique_identifier) |